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Heat and Mass Transfer

Heat and Mass Transfer
Heat is closely related with

Energy
Liquids
Entropy
Temperature

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Heat and Mass Transfer
Metals are good conductors of heat because

Their atoms collide frequently
Their atoms are relatively far apart
They have high density
They contain free electrons

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Heat and Mass Transfer
Depending on the radiating properties, a body will be black when(Where a = absorptivity, p = reflectivity, X = transmissivity.)

P= 1, T = 0 and a = 0
X = 0, a + p = 0
P = 0, x = 1 and a = 0
P = 0, x = 0 and a = 1

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Heat and Mass Transfer
Fourier's law of heat conduction is valid for

Regular surfaces having non-uniform temperature gradients
Two dimensional cases only
One dimensional cases only
Three dimensional cases only

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Heat and Mass Transfer
The rate of energy transferred by convection to that by conduction is called

Stanton number
Nusselt number
Peclet number
Biot number

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Heat and Mass Transfer
A non-dimensional number generally associated with natural convection heat transfer is

Nusselt number
Prandtl number
Grashoff number
Weber number

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MORE MCQ ON Heat and Mass Transfer

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